On a hot summer day, the temperature of air in Arizona reaches 111°F. What is the speed of sound in air at this temperature? (The speed of sound at 0°C is 331 m/s. Use the conversion 0°C = 273 K as necessary.) m/s
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- Question 2 If the speed of sound in air at 0 °C is 331 m/s. What will be the speed of sound in air at 50 °C? 299 m/s 142 m/s 331 m/s 360 m/s None of these. A Moving to another question will ave this response. ch 45A Moving to another question will save this response. Question 2 If the speed of sound in air at 0 °C is 331 m/s. What will be the speed of sound in air at 50 °C? 299 m/s 142 m/s 331 m/s 360 m/s None of these. AMoving to another question will save this response. ch 45Question 25 In an experiment, two students measured the speed of sound in sea water at room temperature (20°C). Both of the students recorded their results in their notebooks as follows: A) (1515 + 7)m/s B) (1522 + 4) m/s The students then looked up the value for the speed of sound in sea water and found it to be 1531 m/s. Which of the following statements best describes the comparison between the students' results and the accepted value for the speed? The values that the two students found did not agree with each other, but one of the student's answer did agree with the accepted value. The values that the two students found agree with each other but not with the accepted value. The values that the two students found did not agree with each other, nor with the accepted value. The values that the two students found agree with each other and with the accepted value. The values that the two students found were wrong and should have agreed with the accepted value.
- On a hot summer day, the temperature of air in Arizona reaches 101°F. What is the speed of sound in air at this temperature? (The speed of sound at 0°C is 331 m/s. Use the conversion 0°C = 273 K as necessary.) m/sYou place your ear onto a steel railroad track and hear the sound of a distant train through the rails Δt = 3.3 seconds faster than you do through the air. The speed of sound in steel is vs = 6100 m/s while in air the speed of sound is va = 343 m/s. Write an equation for the time it takes the sound to reach you through the air if the distance to the train is represented by D. Write an equation for the time it takes the sound to reach you through the steel if the distance to the train is represented by D. Use the difference in these two times to write an equation for the distance to the train. For the given information find the distance to the train in metersYou are on a boat in a fog and know there are cliffs ahead of you somewhere, but you cannot see them. You use your fog horn to send out a blast of sound (assume the temperature of the air is 20 oC) and the time it takes for the sound to return to you is 20.0 s. How far away are the cliffs (in metric units)? Hint: Be careful and think about the physics of the problem. You may want to make a sketch of the situation to help you determine the answer. 1798 m 3444 m 3596 m 7192 m
- You are on a boat in a fog and know there are cliffs ahead of you somewhere, but you cannot see them. You use your fog horn to send out a blast of sound (assume the temperature of the air is 20 oC) and the time it takes for the sound to return to you is 20.0 s. How far away are the cliffs (in metric units)? Hint: Be careful and think about the physics of the problem. You may want to make a sketch of the situation to help you determine the answer. Question 6 options: 1798 m 3444 m 3596 m 7192 mThe coldest and hottest temperatures ever recorded in Switzerland are -43.2°F (231 K) and 106.7°F (315 K), respectively. What is the speed of sound in air (in m/s) at each temperature? speed of sound at -43.2°F m/s speed of sound at 106.7°F m/sAir temperature in a desert can reach 53.0°C (about 127°F). What is the speed of sound (in m/s) in air at that temperature? m/s Additional Materials O Reading
- You are standing on a train station platform as a train goes by close to you. As the train approaches, you hear the whistle sound at a frequency of f1 = 93 Hz. As the train recedes, you hear the whistle sound at a frequency of f2 = 79 Hz. Take the speed of sound in air to be v = 340 m/s. Find an equation for the speed of the sound source vs, in this case it is the speed of the train. Express your answer in terms of f1, f2, and v. Find the numeric value, in meters per second, for the speed of the train. Find an equation for the frequency of the train whistle fs ("s" is for "source") that you would hear if the train were not moving. Express your answer in terms of f1, f2, and v. Find the numeric value, in hertz, for the frequency of the train whistle fs that you would hear if the train were not moving.Air temperature in a desert can reach 55.0°C (about 131°F). What is the speed of sound (in m/s) in air at that temperature?The accepted value for the speed of sound in dry air is 331.50 m/s at 0 °C. This speed increases by 0.607 m/s for each additional °C. Compute the accepted value for the speed of sound in air at a room temperature of 27 °C, also known as 300 K because T = 273.15 + t ( Here t is in degree Celsius).